NGC 1559

Galaxie
NGC 1559
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Die Balkenspiralgalaxie NGC 1559 aufgenommen mit dem multi-Modus FORS1 Instrument des VLT der Europäischen Südsternwarte. Die Supernova 2005fd ist als heller Punkt direkt über der Galaxie sichtbar.
AladinLite
SternbildNetz
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension04h 17m 35,8s[1]
Deklination−62° 47′ 01″[1]
Erscheinungsbild
Morphologischer TypSB(s)cd / Sy[1]
Helligkeit (visuell)10,4 mag[2]
Helligkeit (B-Band)11,1 mag[2]
Winkel­ausdehnung3,5′ × 2′[2]
Positionswinkel64°[2]
Flächen­helligkeit12,4 mag/arcmin²[2]
Physikalische Daten
Rotverschiebung0,004350 ± 0,000013[1]
Radial­geschwin­digkeit(1304 ± 4) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)		(50 ± 4) · 106 Lj
(15,4 ± 1,1) Mpc [1]
Durchmesser50.000 Lj[3]
Geschichte
EntdeckungJames Dunlop
Entdeckungsdatum9. Dezember 1826
Katalogbezeichnungen
NGC 1559 • PGC 14814 • ESO 084010 • IRAS 04170-6253 • 2MASX J04173578-6247012 • SGC 041701-6254.3 • AM 0417-625 • LDCE 328 NED009

NGC 1559 ist eine Balken-Spiralgalaxie mit aktivem Galaxienkern vom Hubble-Typ SBc im Sternbild Reticulum am Südsternhimmel. Sie ist schätzungsweise 50 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 55.000 Lj.

Aktuelle Beobachtungen haben gezeigt, dass die Galaxie weder Teil eines Galaxienhaufens noch einer Galaxiengruppe ist und auch keine näheren Begleitgalaxien besitzt.[4][5][6] NGC 1559 hat massive Spiralarme und weist starke Sternentstehung auf,[4] die Galaxie ist darüber hinaus Quelle von sehr starker Radiostrahlung.[4]

Im Jahr 2005 fand eine Supernova vom Typ Ia SN 2005df statt. Zwei weitere Supernovae, die in NGC 1559 beobachtet wurden, waren SN 1984J (Typ-II) und SN 1986L (Typ-IIP). Alle drei wurden von dem australischen Amateurastronomen Robert Evans entdeckt.[7] Im Jahr 2009 wurde die Typ-IIP-Supernova SN 2009ib hier beobachtet.[8]

Das Objekt wurde am 9. Dezember 1826 von James Dunlop entdeckt.[6]

  • Hochaufgelöste Aufnahme des Hubble-Weltraumteleskops
    Hochaufgelöste Aufnahme des Hubble-Weltraumteleskops
  • Infrarotaufnahme mithilfe des James Webb-Weltraumteleskops
    (c) ESA/Webb, NASA & CSA, A. Leroy, J. Lee and the PHANGS Team, CC BY 4.0
    Infrarotaufnahme mithilfe des James Webb-Weltraumteleskops
Commons: NGC 1559 – Sammlung von Bildern, Videos und Audiodateien

Einzelnachweise

  1. ↑ a b c d NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS: NGC 1559
  3. ↑ NASA/IPAC
  4. ↑ a b c R. Beck, V. Shoutenkov, M. Ehle, J. I. Harnett, R. F. Haynes, A. Shukurov, D. D. Sokoloff, M. Thierbach: Magnetic fields in barred galaxies. In: Astronomy and Astrophysics. Band 391, Nr. 1, S. 83–102, doi:10.1051/0004-6361:20020642.
  5. ↑ M. A. G. Maia, L. N. da Costa, David W. Latham: A catalog of southern groups of galaxies. In: The Astrophysical Journal Supplement Series. Band 69. 1989, S. 809–829, bibcode:1989ApJS...69..809M, doi:10.1086/191328, ISSN 0067-0049
  6. ↑ a b Seligman
  7. ↑ Supernova Discoveries by Rev. Robert Evans. In: revivalsresearch.com. Abgerufen am 6. Juni 2022.
  8. ↑ Simbad SN

Auf dieser Seite verwendete Medien

A galactic treasury (potm2402a).jpg
(c) ESA/Webb, NASA & CSA, A. Leroy, J. Lee and the PHANGS Team, CC BY 4.0
This image features the barred spiral galaxy galaxy NGC 1559 as seen by the NASA/ESA/CSA James Webb Space Telescope. The galaxy hosts a visible central region with a distinct open pattern in the loosely-wound spiral arms. NGC 1559 resides approximately 35 million light-years away in the little-observed southern constellation Reticulum (The Reticule).The data featured in this portrait make use of two of Webb’s instruments: the Mid-InfraRed Instrument (MIRI) and Near-InfraRed Camera (NIRCam). Here MIRI captures the glow of interstellar dust grains, which trace out the interstellar medium, the fuel for future star formation. NIRCam shows the light from stars, even young stars hidden behind prodigious amounts of dust. NIRCam also captures emission from ionised nebulae around young stars.The data were collected by the PHANGS team as part of an observing programme in which Webb will observe 55 galaxies that have also been mapped by the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope, the NASA/ESA Hubble Space Telescope and more. By combining Webb’s unprecedented view of the dust and stars with data from these other facilities, the team aims to obtain a new, highly detailed view of how stars are born, live, and die in galaxies across the Universe. This is also a Treasury programme, which means that the data will have no exclusive access period and so the scientific community (and others, including the general public) can access the data immediately. This has the advantage that more research can be done with the data more quickly.NGC 1559 has massive spiral arms that abound with star formation, and it is receding from us at a speed of about 1300 kilometres per second. Although NGC 1559 appears to sit near one of our nearest neighbours in the sky — the Large Magellanic Cloud (LMC) - this is just a trick of perspective. In reality, NGC 1559 is physically nowhere near the LMC in space; in fact it truly is a loner, lacking the company of any nearby galaxies or membership of any galaxy cluster.NGC 1559 may be alone in space, but with Webb we are admiring from far away.[Image Description: A barred spiral galaxy on a dark, nearly empty background. The whole galaxy glows with a pale light, particularly along the galaxy’s bar which runs from top to bottom through the galactic core. It’s speckled with tiny stars. The centre is surrounded by rich clouds of hot gas and dust along the arms. The arms are loosely wound and a bit ragged, and contain a few star-forming regions that shine brightly.]

Links
Supernova 2005dh and Spiral Galaxy NGC 1559.jpg
Autor/Urheber: ESO, Lizenz: CC BY 3.0
Colour-composite image of the spiral galaxy NGC 1559 in the Reticulum constellation, obtained with the multi-mode FORS1 instrument on ESO's 8.2m VLT. The supernova, SN 2005df, is visible as the bright star just above the galaxy. Many background galaxies can also be seen in this image.
The loneliest firework display (40098425261).jpg
Autor/Urheber: Hubble ESA, Lizenz: CC BY 2.0

Roughly 50 million light-years away lies a somewhat overlooked little galaxy named NGC 1559. Pictured here by Hubble’s Wide Field Camera 3, this barred spiral lies in the little-observed southern constellation of Reticulum (The Reticule).

More information: <a href="https://www.spacetelescope.org/images/potw1806a/" rel="nofollow">www.spacetelescope.org/images/potw1806a/</a>

Credit:

ESA/Hubble & NASA